Gas-engine.



. KROYER.

GAS ENGINE.

APPLICATION FILED JUNE 2,

Patented 001;. 18, 1910.

Witweooeo l (flit JOHN M. KROYER, OF STOCKTON, CALIFORNIA, ASSIGNOR TOSAMSON IRON WORKS, 0.5 STOCKTON, CALIFORNIA, A CORPORATION.

GAS-ENGINE.

Specification of Letters Patent.

Patented Oct. 18, ii: to

Application filed June 2, 1909. Serial No. 439,703.

To all whom it may concern:

Be it known that I, JOHN M. Knorsii, a citizen of the United States,residing at Stockton, in the county of San Joaquin, State of California,have invented certain new and useful Improvements in Gas-Engines; and'Ido declare the following to be a full, clear, and exact description ofthe same, such as will enable others sk lled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the characters of reference markedthereon, which form a part of this application.

This invention relates to improvements in motors generallyand'particularly to gas e11- gines of that type known as four cyclemotors, the main object of the invention being to avoid and do away withthe obnoxious and annoying smoke and odor which is now so commonlyprevalent around motors of this type especially with marine motors wherethe boat is liable to be inclosed which gives the smoke and smell noopportunity to escape to the atmosphere.

A further object of the invention is to produce a simple and inexpensiveand easily operated and yet an exceedingly effective device for thepurpose.

These objects I accomplish by means of a tightly inclosed crank case onthe engine, the same having an air inlet port of suitable dimensions tofreely feed a suflicient quantity of air by the suction of the engineinto the air pipe of the carburetor of the engine, the air being takenfrom said crank case through a pipe extending to a point near the roofof such case to maintain the air free from oil or dirt, the air thuspassing from the atmosphere through the crank case and thence to theengine picking up and carrying with it all the smoke and odor of heatedoil which always emanates from the crank case of an engine, thuspreventing the same from circulating through the atmosphere and becomingobnoxious. A further advantageous feature of the air passing through thecrank case is that it becomes heated which, of course, is a great aid toa rapid and effective mixture. I also employ such other and furtherstructure and relative arrangement of parts as will more fully appear bya perusal. of the following specification and claims.

I11 the drawings similar characters of ref erence indicate corespondingparts in the several views.

Figure 1 is a front elevation of my improved motor. Fig. 2 is a rearelevation of the same. Fig. 3 is a sectional view of the crank caseshowing the air outlet feed pipe mechanism. I 4

Referring now more particularly to the characters of referenceon thedrawings 1 designates the engine proper having a crank case 2 whichcrank case is entirely inclosed on all sides and provided with an airinlet port 3 from the top of one side of said casing.-

4 is an outlet air supply pipe starting from a point a near the roof ofthe casing 2 at a side opposite to the intake port 3 and pro vided witha flanged open cap 5 at its top, such pipe 4 extending outside thecasing 2 and connecting with the air pipe 7 of the carburetor of thecngme.

In practice the suction of the engine draws air into the case 2 throughthe inlet port 3, circulates it through said casing 2 and thence drawsit through the pipes 5 and 7 into the carburetor 8 and thence to theengine cylin ders, such air carrying with it through to said engine theodor and smoke from the crank case and thus ridding the immediatesurroundings of the engine of the same. The flange 6 of the cap 5prevents the crank of the engine throwing any oil or dirt into the pipe4, since said flange 6 extends closely against the roof of the casing,the open space a forming a free passage way for the air.

In addition to the advantages gained as set forth above, a furtheradvantage of passing the air through the crank case rior to its entranceto the cylinders is that in passing through the crank case, the suctionof the air into the cylinders causes it to gather -or pick up a more orless quantity of lubricant and this passes to the cylinders thus aidmgin lubricating them.

From the foregoing description it will be readily seen that I haveproduced sucl" a means for disposing of the smoke and smell 'of a gasmotor as substantially fulfils the objects of the invention as set forthherein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention.

Having thus described my invention, what I claim as new and useful anddesire to secure by Letters Patent is t 1. A gas motor comprising anengine having an inclosed crank case, an open air inlet into said crankcase, an open outlet pipe proj eating from said crank case to thecylinders of the engine, and an open flanged cap on said pipe.

2. A gas engine comprising an engine having an inclosed crank case, anair inlet into such crank case, a vertical pipe disposed from the top tothe bottom of said crank case, the upper end of said pipe being open,and means communicating from the bottom of said pipe with the cylindersof saidengine. I

3. A gas engine comprising an engine having an inclosed crank case, anair inlet into said crank case,'a vertical pipe within said crank caseextending from the top to the bottom thereof,an 0 en flanged cap on thetop of said pipe an means communieating from the bottom of said pipewith the cylinders of said engine.

In testimony whereof I aflix my signature in presence oftwo Witnesses.

. JOHN M. KROYER.

Witnesses:

W. B. GRIFFIN, PERCY S. VVEBSTER.

